*Excerpt from a thesis submitted to the University of Amsterdam for the degree M.D. Two cases of prolapse of gastric mucosa into the duodenum are descriptionbed, as well as some of the relevant anatomical, surgical, radiological, clinical and etiological features.

A short discussion of calcification in soft tissues with special reference to calcinosis circumscripta and calcinosis universalis is presented. A case report of calcinosis universalis in a Bantu girl of 4 years follows, discussing the probability of dermatomyositis preceding tbe calcinosis. The only therapy used was ACTH and this showed no ameliorating effect whatsoever.